作为水和废水，再生水的使用越来越普遍 公用事业公司寻求更有效地利用水资源，满足废水处理的要求 并在没有其他饮用水的情况下适应系统的增长 消息来源。但是，再生水的直接分配和使用什么时候能带来经济效益呢 感觉本文将使用五种替代性经济分析来检验这一点 问题: 针对客户的分析，评估提供再生水的经济性 为特定类型的客户提供服务（例如，新住宅开发项目、本地 灌溉客户）； 一种特定于工厂的分析，用于评估分配再生水的经济性 来自特定的再生水处理厂； 避免成本分析，根据 避免了饮用水系统成本； 净现值分析，检查未来再生水的当前价值 避免饮用水系统操作；和 一项水权缓解分析，该分析检查了可再生水的使用情况 获得额外的饮用水权利。 利用瑟斯顿县洛特废水联盟提供的信息进行案例研究， 华盛顿审查了这五项经济分析的使用情况。在结论中 这项研究得出的结论是再生水的使用类型和数量对 潜在的再生水客户，提供这一服务所需的配送基础设施 服务，以及灌溉季节的长短，以确定该项目的经济可行性 直接分配和使用再生水。包括表格，如图所示。

The use of reclaimed water is becoming increasingly common as water and wastewater utilities seek to use water resources more efficiently, meet wastewater disposal requirements, and accommodate system growth in the absence of other potable water sources. But when does the direct distribution and use of reclaimed water make economic sense? This paper examines the use of five alternative economic analyses to examine this question: a customer specific analysis that estimates the economics of providing reclaimed water service to specific types of customers (e.g., a new residential development, a local irrigation customer); a plant specific analysis that estimates the economics of distributing reclaimed water from a specific reclaimed water plant; an avoided cost analysis that estimates the economics of reclaimed water based on avoided potable water system costs; a net present value analysis that examines the current worth of future reclaimed water and avoided potable water system operations; and, a water rights mitigation analysis that examines the use of reclaimed water for use in obtaining additional potable water rights. A case study using information from the LOTT Wastewater Alliance in Thurston County, Washington examines the use of these five economic analyses. Among the conclusions reached in the study is the importance of the type and amount of reclaimed water use by potential reclaimed water customers, the distribution infrastructure required to provide that service, and the length of the irrigation season in determining the economic viability of the direct distribution and use of reclaimed water. Includes tables, figure.